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This project is a cross-chain bridge that enables token transfers between Ethereum (EVM) and NEAR Protocol (non-EVM) blockchains.

It is built on three components:

• Ethereum Smart Contracts (Solidity): Manage escrow, partial fills using Merkle tree verification, and contract creation via a factory pattern.

• NEAR Contracts (Rust): Handle escrow, token storage, and resolver logic, with deployments managed through NEAR CLI and WASM upgrades.

• Python Relayer Service: Listens to chain events, manages transaction states, and exposes APIs for order management.

Key features include:

• Hashed Timelock Contracts (HTLC) for secure transactions.
• Escrow + Merkle Tree Verification for partial fills and split transactions.
• State Management & Monitoring by the relayer for reliable cross-chain execution.

This project is a cross-chain bridge connecting Ethereum (EVM) and NEAR Protocol (non-EVM) with a modern full-stack architecture.

Frontend: Built with Next.js + React, using NEAR Wallet Selector for NEAR integration, Ethers.js for Ethereum connectivity, Zustand for state management, and Tailwind CSS for styling.

Relayer System: A Python + FastAPI service that runs Ethereum (Web3.py) and NEAR listeners, monitors events, manages swap states, and securely transmits secrets for atomic swaps.

Smart Contracts:

Ethereum: Solidity-based escrow and factory contracts. NEAR: Rust-based escrow contracts.

Both coordinated through Hashed Timelock Contracts (HTLC) for secure, atomic transfers.

When a user initiates a transfer, the system deploys escrow contracts on both chains, tracks their states, and uses the relayer to coordinate token transfers securely.